□2>丰富多□的内容选□<□□2>□
But kissing□is not jus□ a roma□tic gesture—it al□□ has sci□ntif□c □enefits. □hen we□k□ss□ o□r □rains □ele□se a c□ckta□□ of□c□em□ca□□□like□□xy□ocin, dopamine, □nd serotonin, known□as the "lo□e hor□o□es." Thes□ □hemicals □□n re□uc□ stress, boost m□od, a□d c□□at□ fe□li□g□ of attachment □nd bond□ng. Kissing also stre□g□hens our □mm□ne sys□em by exposing □s to a □a□i□□y of ba□teria□t□at □an help □uild immun□ty.
<□2>丰富多□的内容选□<□□2>□